Techniques for tracking reference signal/channel state information reference signal multiplexing with paging/broadcast message in a wireless communication system

ABSTRACT

Aspects described herein relate to tracking reference signal (TRS)/channel state information reference signal (CSI-RS) multiplexing with paging and/or broadcast messages for idle and/or inactive mode user equipment (UEs) in fifth generation new radio (5G NR). In an example, the aspects may include receiving, from a network entity, an indication to multiplex UE-RS with one or more broadcast messages; monitoring for the one or more broadcast messages during at least one of an idle or inactive mode of the UE; and decoding the one or more broadcast messages based at least on one or more UE-RS.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims benefit of U.S. Provisional ApplicationNo. 63/023,505 entitled “TECHNIQUES FOR TRS/CSI-RS MULTIPLEXING WITHPAGING/BROADCAST MESSAGE IN A WIRELESS COMMUNICATION SYSTEM” filed May12, 2020, which is assigned to the assignee hereof and hereby expresslyincorporated by reference herein.

BACKGROUND

Aspects of the present disclosure relate generally to wirelesscommunication systems, and more particularly, to tracking referencesignal (TRS)/channel state information reference signal (CSI-RS)multiplexing with paging and/or broadcast messages for idle and/orinactive mode user equipment (UEs) in a wireless communication system,such as fifth generation new radio (5G NR).

Wireless communication systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be multiple-accesssystems capable of supporting communication with multiple users bysharing the available system resources (e.g., time, frequency, andpower). Examples of such multiple-access systems include code-divisionmultiple access (CDMA) systems, time-division multiple access (TDMA)systems, frequency-division multiple access (FDMA) systems, andorthogonal frequency-division multiple access (OFDMA) systems, andsingle-carrier frequency division multiple access (SC-FDMA) systems.

These multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent wireless devices to communicate on a municipal, national,regional, and even global level. For example, a fifth generation (5G)wireless communications technology (which can be referred to as NR) isenvisaged to expand and support diverse usage scenarios and applicationswith respect to current mobile network generations. In an aspect, 5Gcommunications technology can include: enhanced mobile broadbandaddressing human-centric use cases for access to multimedia content,services and data; ultra-reliable-low latency communications (URLLC)with certain specifications for latency and reliability; and massivemachine type communications, which can allow a very large number ofconnected devices and transmission of a relatively low volume ofnon-delay-sensitive information.

For example, for various communications technology such as, but notlimited to NR, some implementations may increase transmission speed andflexibility but also transmission complexity. Thus, improvements inwireless communication operations may be desired.

SUMMARY

The following presents a simplified summary of one or more aspects inorder to provide a basic understanding of such aspects. This summary isnot an extensive overview of all contemplated aspects, and is intendedto neither identify key or critical elements of all aspects nordelineate the scope of any or all aspects. Its sole purpose is topresent some concepts of one or more aspects in a simplified form as aprelude to the more detailed description that is presented later.

An example implementation includes a method of wireless communication,including receiving, from a network entity, an indication to multiplexUE-specific reference signal (UE-RS) with one or more broadcastmessages, wherein the UE-RS include a tracking reference signal (TRS)and/or channel state information reference signal (CSI-RS); monitoringfor the one or more broadcast messages during at least one of an idle orinactive mode of the UE; and decoding the one or more broadcast messagesbased at least on one or more TRS/CSI-RS.

In a further example, an apparatus for wireless communication isprovided that includes a transceiver, a memory configured to storeinstructions, and one or more processors communicatively coupled withthe transceiver and the memory. The one or more processors areconfigured to execute the instructions to receive, from a networkentity, an indication to multiplex UE-RS with one or more broadcastmessages, wherein the UE-RS include a TRS and/or CSI-RS; monitor for theone or more broadcast messages during at least one of an idle orinactive mode of the UE; and decode the one or more broadcast messagesbased at least on one or more TRS/CSI-RS.

In another aspect, an apparatus for wireless communication is providedthat includes means for receiving, from a network entity, an indicationto multiplex UE-RS with one or more broadcast messages, wherein theUE-RS include a TRS and/or CSI-RS; means for monitoring for the one ormore broadcast messages during at least one of an idle or inactive modeof the UE; and means for decoding the one or more broadcast messagesbased at least on one or more TRS/CSI-RS.

In yet another aspect, a non-transitory computer-readable medium isprovided including code executable by one or more processors to receive,from a network entity, an indication to multiplex UE-RS with one or morebroadcast messages, wherein the UE-RS include a TRS and/or CSI-RS;monitor for the one or more broadcast messages during at least one of anidle or inactive mode of the UE; and decode the one or more broadcastmessages based at least on one or more TRS/CSI-RS.

Another example implementation includes a method of wirelesscommunication, including transmitting, to one or more UEs, an indicationto multiplex UE-RS with one or more broadcast messages, wherein theUE-RS include a TRS and/or CSI-RS; and transmitting, to the one or moreUEs, the one or more broadcast messages for decoding based on theTRS/CSI-RS, wherein at least one of the one or more UEs operate in anidle or inactive mode.

In a further example, an apparatus for wireless communication isprovided that includes a transceiver, a memory configured to storeinstructions, and one or more processors communicatively coupled withthe transceiver and the memory. The one or more processors areconfigured to execute the instructions to transmit, to one or more UEs,an indication to multiplex UE-RS with one or more broadcast messages,wherein the UE-RS include a TRS and/or CSI-RS; and transmit, to the oneor more UEs, the one or more broadcast messages for decoding based onthe TRS/CSI-RS, wherein at least one of the one or more UEs operate inan idle or inactive mode.

In another aspect, an apparatus for wireless communication is providedthat includes means for transmitting, to one or more UEs, an indicationto multiplex UE-RS with one or more broadcast messages, wherein theUE-RS include a TRS and/or CSI-RS; and means for transmitting, to theone or more UEs, the one or more broadcast messages for decoding basedon the TRS/CSI-RS, wherein at least one of the one or more UEs operatein an idle or inactive mode.

In yet another aspect, a non-transitory computer-readable medium isprovided including code executable by one or more processors totransmit, to one or more UEs, an indication to multiplex UE-RS with oneor more broadcast messages, wherein the UE-RS include a TRS and/orCSI-RS; and transmit, to the one or more UEs, the one or more broadcastmessages for decoding based on the TRS/CSI-RS, wherein at least one ofthe one or more UEs operate in an idle or inactive mode.

To the accomplishment of the foregoing and related ends, the one or moreaspects comprise the features hereinafter described and particularlypointed out in the claims. The following description and the annexeddrawings set forth in detail certain illustrative features of the one ormore aspects. These features are indicative, however, of but a few ofthe various ways in which the principles of various aspects may beemployed, and this description is intended to include all such aspectsand their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosed aspects will hereinafter be described in conjunction withthe appended drawings, provided to illustrate and not to limit thedisclosed aspects, wherein like designations denote like elements, andin which:

FIG. 1 is a schematic diagram of an example of a wireless communicationsystem, in accordance with various aspects of the present disclosure;

FIG. 2 is a block diagram of an example of a network entity inaccordance with various aspects of the present disclosure;

FIG. 3 is a block diagram of an example of a user equipment (UE), inaccordance with various aspects of the present disclosure;

FIG. 4 is a diagram of an example of paging messages in new radio (NR);

FIG. 5 is a flowchart of an example method of wireless communication,and more specifically, UE-specific reference signal (UE-RS) multiplexingwith paging and/or broadcast messages for idle and/or inactive mode UEsat a UE;

FIG. 6 is a flowchart of an example method of wireless communication,and more specifically, UE-RS multiplexing with paging and/or broadcastmessages for idle and/or inactive mode UEs at a network entity; and

FIG. 7 is a block diagram illustrating an example of a MIMOcommunication system including a base station and a UE, in accordancewith various aspects of the present disclosure.

DETAILED DESCRIPTION

Various aspects are now described with reference to the drawings. In thefollowing description, for purposes of explanation, numerous specificdetails are set forth in order to provide a thorough understanding ofone or more aspects. It may be evident, however, that such aspect(s) maybe practiced without these specific details.

The described features generally relate to UE-specific reference signal(UE-RS) (e.g., tracking reference signal (TRS)/channel state information(CSI) reference signal (CSI-RS)) multiplexing with paging and/orbroadcast messages for idle and/or inactive mode user equipment (UEs) ina wireless communication system, such as fifth generation new radio (5GNR, or referred to as NR). In an example, UE power savings enhancementsmay include enhancements for idle and/or inactive-mode UE power savingwith consideration for system performance aspects. Examples of suchenhancements may include specifying paging enhancements to reduceunnecessary UE paging receptions and means to provide potentialTRS/CSI-RS occasions available in connected mode to idle and/orinactive-mode UEs, thereby minimizing system overhead impact. The powersavings enhancements may also include tracking for idle and/or inactivemode UEs in NR. For example, there is no always-on reference signal(e.g., cell-specific reference signal (CRS) in LTE) in NR. UE-specificreference signals (e.g., TRS/CSI-RS) may be configured for connectedmode UEs. In another example, idle and/or inactive mode UEs rely onsynchronization signal blocks (SSBs) in NR. The periodicity of NR SSB(e.g., 20 ms) may be much sparser than LTE CRS. For UE modemimplementations that use SSBs as inputs to the tracking loops (e.g.,frequency tracking loops/time tracking loops (FTL/TTL)), it can beuseful for the UE to receive one or more SSBs, specifically under poorchannel conditions. The UE may be able to enter “light sleep” in betweenSSBs and/or paging occasion (PO), but overall this reduces deep sleeptime and incurs multiple wake-up and/or go-to-sleep overhead.

The present disclosure relates generally to current issues of utilizingUE-RS for idle and/or inactive mode UEs. For example, UE-RS isconfigured to be located in a symbol and/or slot as close to the pagingtransmission as possible.

In an aspect, the present disclosure includes a method, apparatus, andnon-transitory computer readable medium for wireless communications forreceiving, from a network entity, an indication to multiplex UE-RS withone or more broadcast messages, wherein the UE-RS include a TRS/CSI-RS;monitoring for the one or more broadcast messages during at least one ofan idle or inactive mode of the UE; and decoding the one or morebroadcast messages based at least on one or more UE-RS.

In another aspect, the present disclosure includes a method, apparatus,and non-transitory computer readable medium for wireless communicationsfor transmitting, to one or more UEs, an indication to multiplex UE-RSwith one or more broadcast messages, wherein the UE-RS include aTRS/CSI-RS; and transmitting, to the one or more UEs, the one or morebroadcast messages for decoding based on the UE-RS, wherein at least oneof the one or more UEs operate in an idle or inactive mode.

The described features will be presented in more detail below withreference to FIGS. 1-7 .

As used in this application, the terms “component,” “module,” “system”and the like are intended to include a computer-related entity, such asbut not limited to hardware, software, a combination of hardware andsoftware, or software in execution. For example, a component may be, butis not limited to being, a process running on a processor, a processor,an object, an executable, a thread of execution, a program, and/or acomputer. By way of illustration, both an application running on acomputing device and the computing device can be a component. One ormore components can reside within a process and/or thread of executionand a component can be localized on one computer and/or distributedbetween two or more computers. In addition, these components can executefrom various computer readable media having various data structuresstored thereon. The components can communicate by way of local and/orremote processes such as in accordance with a signal having one or moredata packets, such as data from one component interacting with anothercomponent in a local system, distributed system, and/or across a networksuch as the Internet with other systems by way of the signal. Softwareshall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,functions, etc., whether referred to as software, firmware, middleware,microcode, hardware description language, or otherwise.

Techniques described herein may be used for various wirelesscommunication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, andother systems. The terms “system” and “network” may often be usedinterchangeably. A CDMA system may implement a radio technology such asCDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000covers IS-2000, IS-95, and IS-856 standards. IS-2000 Releases 0 and Aare commonly referred to as CDMA2000 1×, 1X, etc. IS-856 (TIA-856) iscommonly referred to as CDMA2000 1×EV-DO, High Rate Packet Data (HRPD),etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. ATDMA system may implement a radio technology such as Global System forMobile Communications (GSM). An OFDMA system may implement a radiotechnology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA),Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi),IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM™, etc. UTRA and E-UTRA arepart of Universal Mobile Telecommunication System (UMTS). 3GPP Long TermEvolution (LTE) and LTE-Advanced (LTE-A) are new releases of UMTS thatuse E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described indocuments from an organization named “3rd Generation PartnershipProject” (3GPP). CDMA2000 and UMB are described in documents from anorganization named “3rd Generation Partnership Project 2” (3GPP2). Thetechniques described herein may be used for the systems and radiotechnologies mentioned above as well as other systems and radiotechnologies, including cellular (e.g., LTE) communications over ashared radio frequency spectrum band. The description below, however,describes an LTE/LTE-A system for purposes of example, and LTEterminology is used in much of the description below, although thetechniques are applicable beyond LTE/LTE-A applications (e.g., to fifthgeneration (5G) NR networks or other next generation communicationsystems).

The following description provides examples, and is not limiting of thescope, applicability, or examples set forth in the claims. Changes maybe made in the function and arrangement of elements discussed withoutdeparting from the scope of the disclosure. Various examples may omit,substitute, or add various procedures or components as appropriate. Forinstance, the methods described may be performed in an order differentfrom that described, and various steps may be added, omitted, orcombined. Also, features described with respect to some examples may becombined in other examples.

Various aspects or features will be presented in terms of systems thatcan include a number of devices, components, modules, and the like. Itis to be understood and appreciated that the various systems can includeadditional devices, components, modules, etc. and/or may not include allof the devices, components, modules etc. discussed in connection withthe figures. A combination of these approaches can also be used.

Referring to FIG. 1 , an example of a wireless communications system andan access network 100 (also referred to as a wireless wide area network(WWAN)) can include base stations 102, UEs 104, an Evolved Packet Core(EPC) 160, and/or a 5G Core (5GC) 190. The base stations 102, which mayalso be referred to as network entities, may include macro cells (highpower cellular base station) and/or small cells (low power cellular basestation). The macro cells can include base stations. The small cells caninclude femtocells, picocells, and microcells. In an example, the basestations 102 may also include gNBs 180, as described further herein.

In one example, some nodes such as base station 102/gNB 180, may have amodem 240 and a communicating component 242, as described herein. Forexample, base station 102 and/or communicating component 242 mayreceive, from a network entity 102, an indication to multiplex UE-RSwith one or more broadcast messages, wherein the UE-RS include aTRS/CSI-RS, monitor for the one or more broadcast messages during atleast one of an idle or inactive mode of the UE 104, and decode the oneor more broadcast messages based at least on one or more UE-RS. Though abase station 102/gNB 180 is shown as having the modem 240 and acommunicating component 242, this is one illustrative example, andsubstantially any node may include a modem 240 and communicatingcomponent 242 for providing corresponding functionalities describedherein.

In another example, some nodes such as UE 104 of the wirelesscommunication system may have a modem 340 and communicating component342 for transmitting, to one or more UEs 104, an indication to multiplexUE-RS with one or more broadcast messages, wherein the UE-RS include aTRS/CSI-RS, and for transmitting, to the one or more UEs 104, the one ormore broadcast messages for decoding based on the UE-RS, wherein atleast one of the one or more UEs 104 operate in an idle or inactivemode. Though a UE 104 is shown as having the modem 340 and communicatingcomponent 342, this is one illustrative example, and substantially anynode or type of node may include a modem 340 and communicating component342 for providing corresponding functionalities described herein.

The base stations 102 configured for 4G LTE (which can collectively bereferred to as Evolved Universal Mobile Telecommunications System (UMTS)Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC160 through backhaul links 132 (e.g., using an S1 interface). The basestations 102 configured for 5G NR (which can collectively be referred toas Next Generation RAN (NG-RAN)) may interface with 5GC 190 throughbackhaul links 184. In addition to other functions, the base stations102 may perform one or more of the following functions: transfer of userdata, radio channel ciphering and deciphering, integrity protection,header compression, mobility control functions (e.g., handover, dualconnectivity), inter-cell interference coordination, connection setupand release, load balancing, distribution for non-access stratum (NAS)messages, NAS node selection, synchronization, radio access network(RAN) sharing, multimedia broadcast multicast service (MBMS), subscriberand equipment trace, RAN information management (RIM), paging,positioning, and delivery of warning messages. The base stations 102 maycommunicate directly or indirectly (e.g., through the EPC 160 or 5GC190) with each other over backhaul links 134 (e.g., using an X2interface). The backhaul links 132, 134 and/or 184 may be wired orwireless.

The base stations 102 may wirelessly communicate with one or more UEs104. Each of the base stations 102 may provide communication coveragefor a respective geographic coverage area 110. There may be overlappinggeographic coverage areas 110. For example, the small cell 102′ may havea coverage area 110′ that overlaps the coverage area 110 of one or moremacro base stations 102. A network that includes both small cell andmacro cells may be referred to as a heterogeneous network. Aheterogeneous network may also include Home Evolved Node Bs (eNBs)(HeNBs), which may provide service to a restricted group, which can bereferred to as a closed subscriber group (CSG). The communication links120 between the base stations 102 and the UEs 104 may include uplink(UL) (also referred to as reverse link) transmissions from a UE 104 to abase station 102 and/or downlink (DL) (also referred to as forward link)transmissions from a base station 102 to a UE 104. The communicationlinks 120 may use multiple-input and multiple-output (MIMO) antennatechnology, including spatial multiplexing, beamforming, and/or transmitdiversity. The communication links may be through one or more carriers.The base stations 102/UEs 104 may use spectrum up to Y MHz (e.g., 5, 10,15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrieraggregation of up to a total of Yx MHz (e.g., for x component carriers)used for transmission in the DL and/or the UL direction. The carriersmay or may not be adjacent to each other. Allocation of carriers may beasymmetric with respect to DL and UL (e.g., more or less carriers may beallocated for DL than for UL). The component carriers may include aprimary component carrier and one or more secondary component carriers.A primary component carrier may be referred to as a primary cell (PCell)and a secondary component carrier may be referred to as a secondary cell(SCell).

In another example, certain UEs 104 may communicate with each otherusing device-to-device (D2D) communication link 158. The D2Dcommunication link 158 may use the DL/UL WWAN spectrum. The D2Dcommunication link 158 may use one or more sidelink channels, such as aphysical sidelink broadcast channel (PSBCH), a physical sidelinkdiscovery channel (PSDCH), a physical sidelink shared channel (PSSCH),and a physical sidelink control channel (PSCCH). D2D communication maybe through a variety of wireless D2D communications systems, such as forexample, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE802.11 standard, LTE, or NR.

The wireless communications system may further include a Wi-Fi accesspoint (AP) 150 in communication with Wi-Fi stations (STAs) 152 viacommunication links 154 in a 5 GHz unlicensed frequency spectrum. Whencommunicating in an unlicensed frequency spectrum, the STAs 152/AP 150may perform a clear channel assessment (CCA) prior to communicating inorder to determine whether the channel is available.

The small cell 102′ may operate in a licensed and/or an unlicensedfrequency spectrum. When operating in an unlicensed frequency spectrum,the small cell 102′ may employ NR and use the same 5 GHz unlicensedfrequency spectrum as used by the Wi-Fi AP 150. The small cell 102′,employing NR in an unlicensed frequency spectrum, may boost coverage toand/or increase capacity of the access network.

A base station 102, whether a small cell 102′ or a large cell (e.g.,macro base station), may include an eNB, gNodeB (gNB), or other type ofbase station. Some base stations, such as gNB 180 may operate in atraditional sub 6 GHz spectrum, in millimeter wave (mmW) frequencies,and/or near mmW frequencies in communication with the UE 104. When thegNB 180 operates in mmW or near mmW frequencies, the gNB 180 may bereferred to as an mmW base station. Extremely high frequency (EHF) ispart of the RF in the electromagnetic spectrum. EHF has a range of 30GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters.Radio waves in the band may be referred to as a millimeter wave. NearmmW may extend down to a frequency of 3 GHz with a wavelength of 100millimeters. The super high frequency (SHF) band extends between 3 GHzand 30 GHz, also referred to as centimeter wave. Communications usingthe mmW/near mmW radio frequency band has extremely high path loss and ashort range. The mmW base station 180 may utilize beamforming 182 withthe UE 104 to compensate for the extremely high path loss and shortrange. A base station 102 referred to herein can include a gNB 180.

The EPC 160 may include a Mobility Management Entity (MME) 162, otherMMES 164, a Serving Gateway 166, a Multimedia Broadcast MulticastService (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC)170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may be incommunication with a Home Subscriber Server (HSS) 174. The MME 162 isthe control node that processes the signaling between the UEs 104 andthe EPC 160. Generally, the MME 162 provides bearer and connectionmanagement. All user Internet protocol (IP) packets are transferredthrough the Serving Gateway 166, which itself is connected to the PDNGateway 172. The PDN Gateway 172 provides UE IP address allocation aswell as other functions. The PDN Gateway 172 and the BM-SC 170 areconnected to the IP Services 176. The IP Services 176 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a packetswitched (PS) Streaming Service, and/or other IP services. The BM-SC 170may provide functions for MBMS user service provisioning and delivery.The BM-SC 170 may serve as an entry point for content provider MBMStransmission, may be used to authorize and initiate MBMS Bearer Serviceswithin a public land mobile network (PLMN), and may be used to scheduleMBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMStraffic to the base stations 102 belonging to a Multicast BroadcastSingle Frequency Network (MBSFN) area broadcasting a particular service,and may be responsible for session management (start/stop) and forcollecting eMBMS related charging information.

The 5GC 190 may include a Access and Mobility Management Function (AMF)192, other AMFs 193, a Session Management Function (SMF) 194, and a UserPlane Function (UPF) 195. The AMF 192 may be in communication with aUnified Data Management (UDM) 196. The AMF 192 can be a control nodethat processes the signaling between the UEs 104 and the 5GC 190.Generally, the AMF 192 can provide QoS flow and session management. UserInternet protocol (IP) packets (e.g., from one or more UEs 104) can betransferred through the UPF 195. The UPF 195 can provide UE IP addressallocation for one or more UEs, as well as other functions. The UPF 195is connected to the IP Services 197. The IP Services 197 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services.

The base station may also be referred to as a gNB, Node B, evolved NodeB (eNB), an access point, a base transceiver station, a radio basestation, a radio transceiver, a transceiver function, a basic serviceset (BSS), an extended service set (ESS), a transmit reception point(TRP), or some other suitable terminology. The base station 102 providesan access point to the EPC 160 or 5GC 190 for a UE 104. Examples of UEs104 include a cellular phone, a smart phone, a session initiationprotocol (SIP) phone, a laptop, a personal digital assistant (PDA), asatellite radio, a positioning system (e.g., satellite, terrestrial), amultimedia device, a video device, a digital audio player (e.g., MP3player), a camera, a game console, a tablet, a smart device, robots,drones, an industrial/manufacturing device, a wearable device (e.g., asmart watch, smart clothing, smart glasses, virtual reality goggles, asmart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)),a vehicle/a vehicular device, a meter (e.g., parking meter, electricmeter, gas meter, water meter, flow meter), a gas pump, a large or smallkitchen appliance, a medical/healthcare device, an implant, asensor/actuator, a display, or any other similar functioning device.Some of the UEs 104 may be referred to as IoT devices (e.g., meters,pumps, monitors, cameras, industrial/manufacturing devices, appliances,vehicles, robots, drones, etc.). IoT UEs may include machine typecommunication (MTC)/enhanced MTC (eMTC, also referred to as category(CAT)-M or Cat M1) UEs, NB-IoT (also referred to as CAT NB1) UEs, aswell as other types of UEs. In the present disclosure, eMTC and NB-IoTmay refer to future technologies that may evolve from or may be based onthese technologies. For example, eMTC may include FeMTC (further eMTC),eFeMTC (enhanced further eMTC), mMTC (massive MTC), etc., and NB-IoT mayinclude eNB-IoT (enhanced NB-IoT), FeNB-IoT (further enhanced NB-IoT),etc. The UE 104 may also be referred to as a station, a mobile station,a subscriber station, a mobile unit, a subscriber unit, a wireless unit,a remote unit, a mobile device, a wireless device, a wirelesscommunications device, a remote device, a mobile subscriber station, anaccess terminal, a mobile terminal, a wireless terminal, a remoteterminal, a handset, a user agent, a mobile client, a client, or someother suitable terminology.

Turning now to FIGS. 2-7 , aspects are depicted with reference to one ormore components and one or more methods that may perform the actions oroperations described herein, where aspects in dashed line may beoptional. Although the operations described below in FIG. 7 is presentedin a particular order and/or as being performed by an example component,it should be understood that the ordering of the actions and thecomponents performing the actions may be varied, depending on theimplementation. Moreover, it should be understood that the followingactions, functions, and/or described components may be performed by aspecially-programmed processor, a processor executingspecially-programmed software or computer-readable media, or by anyother combination of a hardware component and/or a software componentcapable of performing the described actions or functions.

Referring to FIG. 2 , base station 102 (e.g., a base station 102 and/orgNB 180, as described above) may include a variety of components, someof which have already been described above and are described furtherherein, including components such as one or more processors 212 andmemory 216 and transceiver 202 in communication via one or more buses244, which may operate in conjunction with modem 240 and/orcommunicating component 242 for cross link interference (CLI)measurement based on enhanced sounding reference signal (SRS).

In an aspect, the one or more processors 212 can include a modem 240and/or can be part of the modem 240 that uses one or more modemprocessors. Thus, the various functions related to communicatingcomponent 242 may be included in modem 240 and/or processors 212 and, inan aspect, can be executed by a single processor, while in otheraspects, different ones of the functions may be executed by acombination of two or more different processors. For example, in anaspect, the one or more processors 212 may include any one or anycombination of a modem processor, or a baseband processor, or a digitalsignal processor, or a transmit processor, or a receiver processor, or atransceiver processor associated with transceiver 202. In other aspects,some of the features of the one or more processors 212 and/or modem 240associated with communicating component 242 may be performed bytransceiver 202.

Also, memory 216 may be configured to store data used herein and/orlocal versions of applications 275 or communicating component 242 and/orone or more of its subcomponents being executed by at least oneprocessor 212. Memory 216 can include any type of computer-readablemedium usable by a computer or at least one processor 212, such asrandom access memory (RAM), read only memory (ROM), tapes, magneticdiscs, optical discs, volatile memory, non-volatile memory, and anycombination thereof. In an aspect, for example, memory 216 may be anon-transitory computer-readable storage medium that stores one or morecomputer-executable codes defining communicating component 242 and/orone or more of its subcomponents, and/or data associated therewith, whenbase station 102 is operating at least one processor 212 to executecommunicating component 242 and/or one or more of its subcomponents.

Transceiver 202 may include at least one receiver 206 and at least onetransmitter 208. Receiver 206 may include hardware and/or softwareexecutable by a processor for receiving data, the code comprisinginstructions and being stored in a memory (e.g., computer-readablemedium). Receiver 206 may be, for example, a radio frequency (RF)receiver. In an aspect, receiver 206 may receive signals transmitted byat least one base station 102. Additionally, receiver 206 may processsuch received signals, and also may obtain measurements of the signals,such as, but not limited to, Ec/Io, signal-to-noise ratio (SNR),reference signal received power (RSRP), received signal strengthindicator (RSSI), etc. Transmitter 208 may include hardware and/orsoftware executable by a processor for transmitting data, the codecomprising instructions and being stored in a memory (e.g.,computer-readable medium). A suitable example of transmitter 208 mayincluding, but is not limited to, an RF transmitter.

Moreover, in an aspect, base station 102 may include RF front end 288,which may operate in communication with one or more antennas 265 andtransceiver 202 for receiving and transmitting radio transmissions, forexample, wireless communications transmitted by at least one basestation 102 or wireless transmissions transmitted by UE 104. RF frontend 288 may be connected to one or more antennas 265 and can include oneor more low-noise amplifiers (LNAs) 290, one or more switches 292, oneor more power amplifiers (PAs) 298, and one or more filters 296 fortransmitting and receiving RF signals. The antennas 265 may include oneor more antennas, antenna elements, and/or antenna arrays.

In an aspect, LNA 290 can amplify a received signal at a desired outputlevel. In an aspect, each LNA 290 may have a specified minimum andmaximum gain values. In an aspect, RF front end 288 may use one or moreswitches 292 to select a particular LNA 290 and its specified gain valuebased on a desired gain value for a particular application.

Further, for example, one or more PA(s) 298 may be used by RF front end288 to amplify a signal for an RF output at a desired output powerlevel. In an aspect, each PA 298 may have specified minimum and maximumgain values. In an aspect, RF front end 288 may use one or more switches292 to select a particular PA 298 and its specified gain value based ona desired gain value for a particular application.

Also, for example, one or more filters 296 can be used by RF front end288 to filter a received signal to obtain an input RF signal. Similarly,in an aspect, for example, a respective filter 296 can be used to filteran output from a respective PA 298 to produce an output signal fortransmission. In an aspect, each filter 296 can be connected to aspecific LNA 290 and/or PA 298. In an aspect, RF front end 288 can useone or more switches 292 to select a transmit or receive path using aspecified filter 296, LNA 290, and/or PA 298, based on a configurationas specified by transceiver 202 and/or processor 212.

As such, transceiver 202 may be configured to transmit and receivewireless signals through one or more antennas 265 via RF front end 288.In an aspect, transceiver may be tuned to operate at specifiedfrequencies such that UE 104 can communicate with, for example, one ormore base stations 102 or one or more cells associated with one or morebase stations 102. In an aspect, for example, modem 240 can configuretransceiver 202 to operate at a specified frequency and power levelbased on the UE configuration of the UE 104 and the communicationprotocol used by modem 240.

In an aspect, modem 240 can be a multiband-multimode modem, which canprocess digital data and communicate with transceiver 202 such that thedigital data is sent and received using transceiver 202. In an aspect,modem 240 can be multiband and be configured to support multiplefrequency bands for a specific communications protocol. In an aspect,modem 240 can be multimode and be configured to support multipleoperating networks and communications protocols. In an aspect, modem 240can control one or more components of UE 104 (e.g., RF front end 288,transceiver 202) to enable transmission and/or reception of signals fromthe network based on a specified modem configuration. In an aspect, themodem configuration can be based on the mode of the modem and thefrequency band in use. In another aspect, the modem configuration can bebased on UE configuration information associated with UE 104 as providedby the network during cell selection and/or cell reselection.

In an aspect, the processor(s) 212 may correspond to one or more of theprocessors described in connection with the base station in FIG. 7 .Similarly, the memory 216 may correspond to the memory described inconnection with the base station in FIG. 7 .

Referring to FIG. 3 , one example of an implementation of UE 104 mayinclude a variety of components, some of which have already beendescribed above and are described further herein, including componentssuch as one or more processors 312 and memory 316 and transceiver 302 incommunication via one or more buses 344, which may operate inconjunction with modem 340. In an aspect, for example, memory 316 may bea non-transitory computer-readable storage medium that stores one ormore computer-executable codes defining communicating component 342and/or one or more of its subcomponents, and/or data associatedtherewith, when UE 104 is operating at least one processor 312 toexecute communicating component 342 and/or one or more of itssubcomponents for CLI measurement based on enhanced SRS.

The transceiver 302, receiver 306, transmitter 308, one or moreprocessors 312, memory 316, applications 375, buses 344, RF front end388, LNAs 390, switches 392, filters 396, PAs 398, and one or moreantennas 365 may be the same as or similar to the correspondingcomponents of base station 102, as described above, but configured orotherwise programmed for UE operations as opposed to base stationoperations.

In an aspect, the processor(s) 312 may correspond to one or more of theprocessors described in connection with the base station in FIG. 7 .Similarly, the memory 316 may correspond to the memory described inconnection with the base station in FIG. 7 .

Referring to FIG. 4 , an example diagram 400 of resources over timeincludes paging messages in NR. The paging mechanism is different in NRas compared to LTE. For example, in LTE, the CRS may be transmittedperiodically which allows for sample capture around a page and enablesoffline mode implementation. For NR, no CRS is transmitted—only the SSBis used as a reference signal (e.g., 20 ms periodicity), and no offlinemode may be configured due to the potential large gap between each SSBand each paging physical downlink control channel (PDCCH). Further, inNR, the paging message may be beamformed. For FR2, up to 64 beamformedSSBs may be transmitted. For example, up to 64 beamformed copies of thepage (with a one-to-one correspondence to the SSBs) may be transmitted.The UE may select the best beam based on the SSBs and decode thecorresponding page.

In an aspect, UE-RS (e.g., TRS/CSI-RS) may be configured for idle and/orinactive mode UEs. For example, enabling TRS/CSI-RS measurement for idleand/or inactive mode UEs, the idle and/or inactive mode UEs may relyless on SSB for tracking which may improve overall UE power efficiency.Signaling of the TRS/CSI-RS to the idle and/or inactive mode UEs mayinclude a number of differing signaling methods since idle and/orinactive mode UEs do not have dedicated signaling to the base station.In an example, the signaling methods may include short message (e.g.,PDCCH with cyclic redundancy check (CRC) scrambled by P-RNTI) withreserved bits in downlink control information (DCI) format 1_0 for theshort message. In another example, a paging message may be utilized suchas a physical downlink shared channel (PDSCH) scheduled by the PDCCHwith the CRC scrambled by P-RNTI. In another example, a new paging DCIsignaling at least the TRS/CSI-RS occasion configuration and/or theidentifier for paging/UE group may be utilized. The new paging DCI maybe a separate resource from legacy paging DCI.

In an aspect, paging as well as other broadcast messages (e.g., systeminformation blocks) for ide and/or inactive mode UEs do not support ratematching around TRS/CSI-RS. For example, broadcast messages (e.g., PDSCHscheduled with SI-RNTI (other SI than SIB1), RA-RNTI, MsgB-RNTI, P-RNTIor TC-RNTI) rate match around SSB according to ‘ssb-PositionInBurst’ inSIB1. There is also no rate matching of broadcast messages forTRS/CSI-RS. The network may avoid collisions between TRS/CSI-RS forother connected mode UEs and broadcast messages. When TRS/CSI-RS is usedfor idle and/or inactive mode UEs (e.g., for paging performance andpower efficiency improvement), the TRS/CSI-RS may be configured as closeas possible to the paging transmission. For example, the TRS/CSI-RS maybe located in the same slot or on the same symbol that the pagingmessage (e.g., PDSCH) is scheduled (i.e., FDM).

Accordingly, the present aspects include TRS/CSI-RS multiplexing forbroadcast messages.

A first aspect includes rate matching for TRS/CSI-RS for idle/inactivemode UEs. For instance, if a UE is indicated with TRS resources forpaging enhancement, it can rate match around its own TRS/CSI-RS.Alternatively, similar to ‘ssb-PositionInBurst’, a parameter for TRSrate match pattern can be included in system information (SI) (e.g.,master information block (MIB)/SIB1). In some cases, some UEs may beassigned additional resources for paging/broadcast (e.g., foroff-loading purposes).

A second aspect includes puncturing for TRS/CSI-RS for idle/inactivemode UEs. In this case, when TRS/CSI-RS is multiplexed, the resourceelements (REs) of paging/broadcast messages that correspond to theTRS/CSI-RS REs are replaced by TRS/CSI-RS. If indicated with TRSresource, a UE an identify the punctured REs and can decode thepaging/broadcast messages. For other UEs that cannot recognizepuncturing, such UEs may assume all REs are for paging/broadcastmessages.

The indication for the TRS/CSI-RS multiplexing schemes may vary. Forexample, rate-matching or puncturing can be adopted for different cells,or in different time durations, and indicated by system information(e.g., MIB/SIB). Alternatively, a radio resource control (RRC) releasemessage for the idle/inactive mode UE can indicate the multiplexingschemes for neighboring cells.

Referring to FIG. 5 , an example of a method 500 for wirelesscommunication at a UE, such as, UE 104 can be performed using one ormore of the components of UE 104 described in FIGS. 1, 2, 3, and 7 forperforming the TRS/CSI-RS multiplexing with paging/broadcast messagesfor idle/inactive mode UEs as described herein.

At block 502, the method 500 includes receiving, from a network entity,an indication to multiplex UE-RS with one or more broadcast messages,wherein the UE-RS include a TRS/CSI-RS. In an aspect, the communicatingcomponent 342, e.g., in conjunction with processor(s) 312, memory 316,and/or transceiver 302, may be configured to receive, from a networkentity, an indication to multiplex UE-RS with one or more broadcastmessages, wherein the UE-RS include a TRS/CSI-RS. Thus, the UE 104, theprocessor(s) 312, and/or the communicating component 342 may define themeans for receiving, from a network entity, an indication to multiplexUE-RS with one or more broadcast messages, wherein the UE-RS include aTRS/CSI-RS. For example, in an aspect, the UE 104 and/or thecommunicating component 342 may receive a signal, process the signalinto an indication, and/or performs other signal processes such asdescribed above with respect to FIG. 3 .

At block 504, the method 500 includes monitoring for the one or morebroadcast messages during at least one of an idle or inactive mode ofthe UE. In an aspect, the communicating component 342, e.g., inconjunction with processor(s) 312, memory 316, and/or transceiver 302,may be configured to monitor for the one or more broadcast messagesduring at least one of an idle or inactive mode of the UE. Thus, the UE104, the processor(s) 312, and/or the communicating component 342 maydefine the means for monitoring for the one or more broadcast messagesduring at least one of an idle or inactive mode of the UE. For example,in an aspect, the UE 104 and/or the communicating component 342 mayconfigure the processor 312 and/or transceiver 302 to monitor, and/orperforms other signal processes such as described above with respect toFIG. 3 .

At block 506, the method 500 includes decoding the one or more broadcastmessages based at least on one or more UE-RS. In an aspect, thecommunicating component 342, e.g., in conjunction with processor(s) 312,memory 316, and/or transceiver 302, may be configured to decode the oneor more broadcast messages based at least on one or more UE-RS. Thus,the UE 104, the processor(s) 312, and/or the communicating component 342may define the means for decoding the one or more broadcast messagesbased at least on one or more UE-RS. For example, in an aspect, the UE104 and/or the communicating component 342 may receive a signal, processthe signal by decoding, and/or performs other signal processes such asdescribed above with respect to FIG. 3 .

In some aspects of method 500, the indication to multiplex the UE-RScorresponds to rate matching for UE-RS for the at least one of the idleor inactive mode UE.

In some aspects of method 500, the indication to multiplex the UE-RSincludes one or more TRS resources for paging enhancement to rate matcharound the one or more UE-RS.

In some aspects of method 500, the indication to multiplex the UE-RSincludes a parameter for TRS rate match pattern included in a systeminformation.

In some aspects of method 500, the system information corresponds to atleast one of a master information block (MIB) or system informationblock 1 (SIB1), or other system information (OSI).

In some aspects of method 500, additional resources for the one or morebroadcast messages are assigned for the UE.

In some aspects of method 500, the indication to multiplex the UE-RScorresponds to puncturing UE-RS for the at least one of the idle orinactive mode UE.

In some aspects of method 500, one or more resource elements (REs) ofthe one or more broadcast messages that correspond to one or more REs ofthe UE-RS are replaced by the UE-RS.

In some aspects of method 500, the indication to multiplex the UE-RSincludes one or more TRS resources; further comprising identifying oneor more punctured REs based on the one or more TRS resources; andwherein decoding the one or more broadcast messages further comprisesdecoding the one or more broadcast messages based on the one or morepunctured REs.

In some aspects of method 500, the indication to multiplex the UE-RSincludes at least one of rate matching or puncturing for at least one ofone or more cells or different time durations and corresponds to asystem information.

In some aspects of method 500, the system information corresponds to atleast one of a MIB or SIB1.

In some aspects of method 500, the indication to multiplex the UE-RScorresponds to a radio resource control (RRC) release message for the atleast one of the idle or inactive mode UE.

Referring to FIG. 6 , an example of a method 600 for wirelesscommunication at a base station, such as, base station 102 can beperformed using one or more of the components of base station 102described in FIGS. 1, 2, 3, and 7 .

At block 602, the method 600 includes transmitting, to one or more UEs,an indication to multiplex UE-RS with one or more broadcast messages,wherein the UE-RS include a TRS/CSI-RS. In an aspect, the communicatingcomponent 242, e.g., in conjunction with processor(s) 212, memory 216,and/or transceiver 202, may be configured to transmit, to one or moreUEs, an indication to multiplex UE-RS with one or more broadcastmessages, wherein the UE-RS include a TRS/CSI-RS. Thus, the base station102, the processor(s) 212, and/or the communicating component 242 maydefine the means for transmitting, to one or more UEs, an indication tomultiplex UE-RS with one or more broadcast messages, wherein the UE-RSinclude a TRS/CSI-RS. For example, in an aspect, the base station 102and/or the communicating component 242 may process the indication into asignal, and transmit the signal, and/or performs other signal processessuch as described above with respect to FIG. 2 .

At block 604, the method 600 includes transmitting, to the one or moreUEs, the one or more broadcast messages for decoding based on the UE-RS,wherein at least one of the one or more UEs operate in an idle orinactive mode. In an aspect, the communicating component 242, e.g., inconjunction with processor(s) 212, memory 216, and/or transceiver 202,may be configured to transmit, to the one or more UEs, the one or morebroadcast messages for decoding based on the UE-RS, wherein at least oneof the one or more UEs operate in an idle or inactive mode. Thus, thebase station 102, the processor(s) 212, and/or the communicatingcomponent 242 may define the means for transmitting, to the one or moreUEs, the one or more broadcast messages for decoding based on the UE-RS,wherein at least one of the one or more UEs operate in an idle orinactive mode. For example, in an aspect, the base station 102 and/orthe communicating component 242 may process the one or more broadcastmessages into a signal, and transmit the signal, and/or performs othersignal processes such as described above with respect to FIG. 2 .

In some aspects of method 600, the indication to multiplex the UE-RScorresponds to rate matching for UE-RS for the at least one of the oneor more UEs operating in an idle or inactive mode.

In some aspects of method 600, the indication to multiplex the UE-RSincludes one or more TRS resources for paging enhancement to rate matcharound the one or more UE-RS.

In some aspects of method 600, the indication to multiplex the UE-RSincludes a parameter for TRS rate match pattern included in a systeminformation.

In some aspects of method 600, the system information corresponds to atleast one of a MIB or SIB1, or other OSI.

In some aspects of method 600, additional resources for the one or morebroadcast messages are assigned for the one or more UEs.

In some aspects of method 600, the indication to multiplex the UE-RScorresponds to puncturing UE-RS for the at least one of the one or moreUEs operating in an idle or inactive mode.

In some aspects of method 600, one or more REs of the one or morebroadcast messages that correspond to one or more REs of the UE-RS arereplaced by the UE-RS.

In some aspects of method 600, the indication to multiplex the UE-RSincludes one or more TRS resources.

In some aspects of method 600, the indication to multiplex the UE-RSincludes at least one of rate matching or puncturing for at least one ofone or more cells or different time durations and corresponds to asystem information.

In some aspects of method 600, the system information corresponds to atleast one of a MIB or SIB1.

In some aspects of method 600, the indication to multiplex the UE-RScorresponds to a RRC release message for the at least one of the one ormore UEs operating in an idle or inactive mode.

Referring to FIG. 7 , an example of a MIMO communication system 700includes base station 102, which may be acting as an integrated accessand backhaul (IAB) node or a parent node, and UE 104. The base station102 and UE 104 may be the same as described above, and may includeadditional components as described with reference to FIG. 7 . The MIMOcommunication system 700 may illustrate an aspect of the wirelesscommunication access network 100 described with reference to FIG. 1 .The base station 102 may be equipped with antennas 734 and 735, and theUE 104 may be equipped with antennas 752 and 753. In the MIMOcommunication system 700, the base station 102 may be able to send dataover multiple communication links at the same time. Each communicationlink may be called a “layer” and the “rank” of the communication linkmay indicate the number of layers used for communication. For example,in a 2×2 MIMO communication system where base station 102 transmits two“layers,” the rank of the communication link between the base station102 and the UE 104 is two.

At the base station 102, a transmit (Tx) processor 720 may receive datafrom a data source. The transmit processor 720 may process the data. Thetransmit processor 720 may also generate control symbols or referencesymbols. A transmit MIMO processor 730 may perform spatial processing(e.g., precoding) on data symbols, control symbols, or referencesymbols, if applicable, and may provide output symbol streams to thetransmit modulator/demodulators 732 and 733. Each modulator/demodulator732 through 733 may process a respective output symbol stream (e.g., forOFDM, etc.) to obtain an output sample stream. Eachmodulator/demodulator 732 through 733 may further process (e.g., convertto analog, amplify, filter, and upconvert) the output sample stream toobtain a DL signal. In one example, DL signals frommodulator/demodulators 732 and 733 may be transmitted via the antennas734 and 735, respectively.

At the UE 104, the UE antennas 752 and 753 may receive the DL signalsfrom the base station 102 and may provide the received signals to themodulator/demodulators 754 and 755, respectively. Eachmodulator/demodulator 754 through 755 may condition (e.g., filter,amplify, downconvert, and digitize) a respective received signal toobtain input samples. Each modulator/demodulator 754 through 755 mayfurther process the input samples (e.g., for OFDM, etc.) to obtainreceived symbols. A MIMO detector 756 may obtain received symbols fromthe modulator/demodulators 754 and 755, perform MIMO detection on thereceived symbols, if applicable, and provide detected symbols. A receive(Rx) processor 758 may process (e.g., demodulate, deinterleave, anddecode) the detected symbols, providing decoded data for the UE 104 to adata output, and provide decoded control information to a processor 780,or memory 782.

The processor 740 may in some cases execute stored instructions toinstantiate a communicating component 242 (see e.g., FIGS. 1 and 2 ).The processor 780 may in some cases execute stored instructions toinstantiate a communicating component 342 (see e.g., FIGS. 1 and 3 ).

On the uplink (UL), at the UE 104, a transmit processor 764 may receiveand process data from a data source. The transmit processor 764 may alsogenerate reference symbols for a reference signal. The symbols from thetransmit processor 764 may be precoded by a transmit MIMO processor 766if applicable, further processed by the modulator/demodulators 754 and755 (e.g., for SC-FDMA, etc.), and be transmitted to the base station102 in accordance with the communication parameters received from thebase station 102. At the base station 102, the UL signals from the UE104 may be received by the antennas 734 and 735, processed by themodulator/demodulators 732 and 733, detected by a MIMO detector 736 ifapplicable, and further processed by a receive processor 738. Thereceive processor 738 may provide decoded data to a data output and tothe processor 740 or memory 742.

The components of the UE 104 may, individually or collectively, beimplemented with one or more ASICs adapted to perform some or all of theapplicable functions in hardware. Each of the noted modules may be ameans for performing one or more functions related to operation of theMIMO communication system 1000. Similarly, the components of the basestation 102 may, individually or collectively, be implemented with oneor more ASICs adapted to perform some or all of the applicable functionsin hardware. Each of the noted components may be a means for performingone or more functions related to operation of the MIMO communicationsystem 700.

SOME FURTHER EXAMPLE CLAUSES

Implementation examples are described in the following numbered clauses:

1. A method of wireless communication at a user equipment (UE),comprising:

-   -   receiving, from a network entity, an indication to multiplex a        UE-specific reference signal (UE-RS) with one or more broadcast        messages, wherein the UE-RS include a tracking reference signal        (TRS) and/or channel state information reference signal        (CSI-RS);    -   monitoring for the one or more broadcast messages during at        least one of an idle or inactive mode of the UE; and    -   decoding the one or more broadcast messages based at least on        one or more UE-RS.

2. The method of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to rate matching of the one or morebroadcast messages for UE-RS for the at least one of the idle orinactive mode UE.

3. The method of any preceding clause, wherein the indication tomultiplex the UE-RS includes one or more TRS resources for pagingenhancement to rate match around the one or more UE-RS.

4. The method of any preceding clause, wherein the indication tomultiplex the UE-RS includes a parameter for TRS rate match patternincluded in a system information, and wherein the system informationcorresponds to at least one of a master information block (MIB), systeminformation block 1 (SIB1), or other system information (OSI).

5. The method of any preceding clause, wherein additional resources forthe one or more broadcast messages are assigned for the UE.

6. The method of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to puncturing of the one or morebroadcast messages for UE-RS for the at least one of the idle orinactive mode UE.

7. The method of any preceding clause, wherein one or more resourceelements (REs) of the one or more broadcast messages that correspond toone or more REs of the UE-RS are replaced by the UE-RS.

8. The method of any preceding clause, wherein the indication tomultiplex the UE-RS includes one or more TRS resources;

-   -   further comprising identifying one or more punctured resource        elements (REs) based on the one or more TRS resources; and    -   wherein decoding the one or more broadcast messages further        comprises decoding the one or more broadcast messages based on        the one or more punctured REs.

9. The method of any preceding clause, wherein the indication tomultiplex the UE-RS includes at least one of rate matching or puncturingfor at least one of one or more cells or different time durations andcorresponds to a system information, and wherein the system informationcorresponds to at least one of a master information block (MIB), systeminformation block 1 (SIB1), or other system information (OSI).

10. The method of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to a radio resource control (RRC)release message for the at least one of the idle or inactive mode UE.

11. A method of wireless communication at a network entity, comprising:transmitting, to one or more user equipments (UEs), an indication tomultiplex UE-specific reference signal (UE-RS) with one or morebroadcast messages, wherein the UE-RS include a tracking referencesignal (TRS) and/or channel state information reference signal (CSI-RS);and

-   -   transmitting, to the one or more UEs, the one or more broadcast        messages for decoding based on the UE-RS, wherein at least one        of the one or more UEs operate in an idle or inactive mode.

12. The method of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to rate matching for UE-RS for the atleast one of the one or more UEs operating in an idle or inactive mode.

13. The method of any preceding clause, wherein the indication tomultiplex the UE-RS includes one or more TRS resources for pagingenhancement to rate match around the one or more UE-RS.

14. The method of any preceding clause, wherein the indication tomultiplex the UE-RS includes a parameter for TRS rate match patternincluded in a system information, and wherein the system informationcorresponds to at least one of a master information block (MIB) orsystem information block 1 (SIB1).

15. The method of any preceding clause, wherein additional resources forthe one or more broadcast messages are assigned for the one or more UEs.

16. An apparatus for wireless communication at a user equipment (UE),comprising:

-   -   a transceiver;    -   a memory configured to store instructions; and    -   one or more processors communicatively coupled with the        transceiver and the memory, wherein the one or more processors        are configured to execute the instructions to:        -   receive, from a network entity, an indication to multiplex a            UE-specific reference signal (UE-RS) with one or more            broadcast messages, wherein the UE-RS include a tracking            reference signal (TRS) and/or channel state information            reference signal (CSI-RS);        -   monitor for the one or more broadcast messages during at            least one of an idle or inactive mode of the UE; and        -   decode the one or more broadcast messages based at least on            one or more UE-RS.

17. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to rate matching of the one or morebroadcast messages for UE-RS for the at least one of the idle orinactive mode UE.

18. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS includes one or more TRS resources for pagingenhancement to rate match around the one or more UE-RS.

19. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS includes a parameter for TRS rate match patternincluded in a system information, and wherein the system informationcorresponds to at least one of a master information block (MIB), systeminformation block 1 (SIB1), or other system information (OSI).

20. The apparatus of any preceding clause, wherein additional resourcesfor the one or more broadcast messages are assigned for the UE.

21. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to puncturing of the one or morebroadcast messages for UE-RS for the at least one of the idle orinactive mode UE.

22. The apparatus of any preceding clause, wherein one or more resourceelements (REs) of the one or more broadcast messages that correspond toone or more REs of the UE-RS are replaced by the UE-RS.

23. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS includes one or more TRS resources;

-   -   further comprising identifying one or more punctured resource        elements (REs) based on the one or more TRS resources; and    -   wherein decoding the one or more broadcast messages further        comprises decoding the one or more broadcast messages based on        the one or more punctured REs.

24. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS includes at least one of rate matching or puncturingfor at least one of one or more cells or different time durations andcorresponds to a system information, and wherein the system informationcorresponds to at least one of a master information block (MIB), systeminformation block 1 (SIB1), or other system information (OSI).

25. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to a radio resource control (RRC)release message for the at least one of the idle or inactive mode UE.

26. An apparatus for wireless communication at a network entity,comprising:

-   -   a transceiver;    -   a memory configured to store instructions; and    -   one or more processors communicatively coupled with the        transceiver and the memory, wherein the one or more processors        are configured to execute the instructions to:        -   transmit, to one or more user equipments (UEs), an            indication to multiplex UE-specific reference signal (UE-RS)            with one or more broadcast messages, wherein the UE-RS            include a tracking reference signal (TRS) and/or channel            state information reference signal (CSI-RS); and        -   transmit, to the one or more UEs, the one or more broadcast            messages for decoding based on the UE-RS, wherein at least            one of the one or more UEs operate in an idle or inactive            mode.

27. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS corresponds to rate matching for UE-RS for the atleast one of the one or more UEs operating in an idle or inactive mode.

28. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS includes one or more TRS resources for pagingenhancement to rate match around the one or more UE-RS.

29. The apparatus of any preceding clause, wherein the indication tomultiplex the UE-RS includes a parameter for TRS rate match patternincluded in a system information, and wherein the system informationcorresponds to at least one of a master information block (MIB) orsystem information block 1 (SIB1).

30. The apparatus of any preceding clause, wherein additional resourcesfor the one or more broadcast messages are assigned for the one or moreUEs.

The above detailed description set forth above in connection with theappended drawings describes examples and does not represent the onlyexamples that may be implemented or that are within the scope of theclaims. The term “example,” when used in this description, means“serving as an example, instance, or illustration,” and not “preferred”or “advantageous over other examples.” The detailed description includesspecific details for the purpose of providing an understanding of thedescribed techniques. These techniques, however, may be practicedwithout these specific details. In some instances, well-known structuresand apparatuses are shown in block diagram form in order to avoidobscuring the concepts of the described examples.

Information and signals may be represented using any of a variety ofdifferent technologies and techniques. For example, data, instructions,commands, information, signals, bits, symbols, and chips that may bereferenced throughout the above description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, computer-executable code or instructionsstored on a computer-readable medium, or any combination thereof.

The various illustrative blocks and components described in connectionwith the disclosure herein may be implemented or performed with aspecially-programmed device, such as but not limited to a processor, adigital signal processor (DSP), an ASIC, a field programmable gate array(FPGA) or other programmable logic device, a discrete gate or transistorlogic, a discrete hardware component, or any combination thereofdesigned to perform the functions described herein. Aspecially-programmed processor may be a microprocessor, but in thealternative, the processor may be any conventional processor,controller, microcontroller, or state machine. A specially-programmedprocessor may also be implemented as a combination of computing devices,e.g., a combination of a DSP and a microprocessor, multiplemicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration.

The functions described herein may be implemented in hardware, software,or any combination thereof. If implemented in software executed by aprocessor, the functions may be stored on or transmitted over as one ormore instructions or code on a non-transitory computer-readable medium.Other examples and implementations are within the scope and spirit ofthe disclosure and appended claims. For example, due to the nature ofsoftware, functions described above can be implemented using softwareexecuted by a specially programmed processor, hardware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations. Moreover, the term “or” is intended to mean an inclusive “or”rather than an exclusive “or.” That is, unless specified otherwise, orclear from the context, the phrase, for example, “X employs A or B” isintended to mean any of the natural inclusive permutations. That is, forexample the phrase “X employs A or B” is satisfied by any of thefollowing instances: X employs A; X employs B; or X employs both A andB. Also, as used herein, including in the claims, “or” as used in a listof items prefaced by “at least one of” indicates a disjunctive list suchthat, for example, a list of “at least one of A, B, or C” means A or Bor C or AB or AC or BC or ABC (A and B and C).

Computer-readable media includes both computer storage media andcommunication media including any medium that facilitates transfer of acomputer program from one place to another. A storage medium may be anyavailable medium that can be accessed by a general purpose or specialpurpose computer. By way of example, and not limitation,computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium that can be used to carry or store desiredprogram code means in the form of instructions or data structures andthat can be accessed by a general-purpose or special-purpose computer,or a general-purpose or special-purpose processor. Also, any connectionis properly termed a computer-readable medium. For example, if thesoftware is transmitted from a web site, server, or other remote sourceusing a coaxial cable, fiber optic cable, twisted pair, digitalsubscriber line (DSL), or wireless technologies such as infrared, radio,and microwave, then the coaxial cable, fiber optic cable, twisted pair,DSL, or wireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,include compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

The previous description of the disclosure is provided to enable aperson skilled in the art to make or use the disclosure. Variousmodifications to the disclosure will be readily apparent to thoseskilled in the art, and the common principles defined herein may beapplied to other variations without departing from the spirit or scopeof the disclosure. Furthermore, although elements of the describedaspects and/or embodiments may be described or claimed in the singular,the plural is contemplated unless limitation to the singular isexplicitly stated. Additionally, all or a portion of any aspect and/orembodiment may be utilized with all or a portion of any other aspectand/or embodiment, unless stated otherwise. Thus, the disclosure is notto be limited to the examples and designs described herein but is to beaccorded the widest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. A method of wireless communication at a userequipment (UE), comprising: receiving, from a network entity, anindication to multiplex a UE-specific reference signal (UE-RS) with oneor more broadcast messages, wherein the UE-RS includes a trackingreference signal (TRS) and/or channel state information reference signal(CSI-RS), wherein the indication to multiplex the UE-RS corresponds topuncturing of the one or more broadcast messages for the UE-RS for atleast one of an idle or inactive mode of the UE, and one or moreresource elements (REs) of the one or more broadcast messages thatcorrespond to one or more REs of the UE-RS are replaced by the UE-RS;monitoring for the one or more broadcast messages during the at leastone of the idle or inactive mode of the UE; and decoding the one or morebroadcast messages based at least on one or more UE-RS.
 2. The method ofclaim 1, wherein additional resources for the one or more broadcastmessages are assigned for the UE.
 3. The method of claim 1, wherein theindication to multiplex the UE-RS includes one or more TRS resources;further comprising identifying one or more punctured resource elements(REs) based on the one or more TRS resources; and wherein decoding theone or more broadcast messages further comprises decoding the one ormore broadcast messages based on the one or more punctured REs.
 4. Themethod of claim 1, wherein the indication to multiplex the UE-RSincludes puncturing for at least one of one or more cells or differenttime durations and corresponds to a system information, and wherein thesystem information corresponds to at least one of a master informationblock (MIB), system information block 1 (SIB1), or other systeminformation (OSI).
 5. The method of claim 1, wherein the indication tomultiplex the UE-RS corresponds to a radio resource control (RRC)release message for the at least one of the idle or inactive mode of theUE.
 6. A method of wireless communication at a network entity,comprising: transmitting, to one or more user equipments (UEs), anindication to multiplex UE-specific reference signal (UE-RS) with one ormore broadcast messages, wherein the UE-RS includes a tracking referencesignal (TRS) and/or channel state information reference signal (CSI-RS),wherein the indication to multiplex the UE-RS corresponds to puncturingof the one or more broadcast messages for the UE-RS for at least one ofan idle or inactive mode of at least one of the one or more UEs, and oneor more resource elements (REs) of the one or more broadcast messagesthat correspond to one or more REs of the UE-RS are replaced by theUE-RS; and transmitting, to the one or more UEs, the one or morebroadcast messages for decoding based on the UE-RS, wherein the at leastone of the one or more UEs operate in the at least one of the idle orinactive mode.
 7. The method of claim 6, wherein additional resourcesfor the one or more broadcast messages are assigned for the one or moreUEs.
 8. The method of claim 6, wherein the indication to multiplex theUE-RS includes puncturing for at least one of one or more cells ordifferent time durations and corresponds to a system information, andwherein the system information corresponds to at least one of a masterinformation block (MIB), system information block 1 (SIB1), or othersystem information (OSI).
 9. The method of claim 6, wherein theindication to multiplex the UE-RS corresponds to a radio resourcecontrol (RRC) release message for the at least one of the one or moreUEs operating in the idle or inactive mode.
 10. An apparatus forwireless communication at a user equipment (UE), comprising: atransceiver; a memory configured to store instructions; and one or moreprocessors communicatively coupled with the transceiver and the memory,wherein the one or more processors are configured to execute theinstructions to: receive, from a network entity, an indication tomultiplex a UE-specific reference signal (UE-RS) with one or morebroadcast messages, wherein the UE-RS includes a tracking referencesignal (TRS) and/or channel state information reference signal (CSI-RS),wherein the indication to multiplex the UE-RS corresponds to puncturingof the one or more broadcast messages for the UE-RS for the at least oneof an idle or inactive mode of the UE, and one or more resource elements(REs) of the one or more broadcast messages that correspond to one ormore REs of the UE-RS are replaced by the UE-RS; monitor for the one ormore broadcast messages during the at least one of the idle or inactivemode of the UE; and decode the one or more broadcast messages based atleast on one or more UE-RS.
 11. The apparatus of claim 10, whereinadditional resources for the one or more broadcast messages are assignedfor the UE.
 12. The apparatus of claim 10, wherein the indication tomultiplex the UE-RS includes one or more TRS resources; furthercomprising identifying one or more punctured resource elements (REs)based on the one or more TRS resources; and wherein decoding the one ormore broadcast messages further comprises decoding the one or morebroadcast messages based on the one or more punctured REs.
 13. Theapparatus of claim 10, wherein the indication to multiplex the UE-RSincludes puncturing for at least one of one or more cells or differenttime durations and corresponds to a system information, and wherein thesystem information corresponds to at least one of a master informationblock (MIB), system information block 1 (SIB1), or other systeminformation (OSI).
 14. The apparatus of claim 10, wherein the indicationto multiplex the UE-RS corresponds to a radio resource control (RRC)release message for the at least one of the idle or inactive mode of theUE.
 15. An apparatus for wireless communication at a network entity,comprising: a transceiver; a memory configured to store instructions;and one or more processors communicatively coupled with the transceiverand the memory, wherein the one or more processors are configured toexecute the instructions to: transmit, to one or more user equipments(UEs), an indication to multiplex UE-specific reference signal (UE-RS)with one or more broadcast messages, wherein the UE-RS includes atracking reference signal (TRS) and/or channel state informationreference signal (CSI-RS), wherein the indication to multiplex the UE-RScorresponds to puncturing of the one or more broadcast messages for theUE-RS for the at least one of an idle or inactive mode of at least oneof the one or more UEs, and one or more resource elements (REs) of theone or more broadcast messages that correspond to one or more REs of theUE-RS are replaced by the UE-RS; and transmit, to the one or more UEs,the one or more broadcast messages for decoding based on the UE-RS,wherein the at least one of the one or more UEs operate in the at leastone of the idle or inactive mode.
 16. The apparatus of claim 15, whereinadditional resources for the one or more broadcast messages are assignedfor the one or more UEs.
 17. The apparatus of claim 15, wherein theindication to multiplex the UE-RS includes puncturing for at least oneof one or more cells or different time durations and corresponds to asystem information, and wherein the system information corresponds to atleast one of a master information block (MIB), system information block1 (SIB1), or other system information (OSI).
 18. The apparatus of claim15, wherein the indication to multiplex the UE-RS corresponds to a radioresource control (RRC) release message for the at least one of the oneor more UEs operating in the idle or inactive mode.